Formulation and evaluation of Self-Nanoemulsifying Drug Delivery System (SNEDDS) Loaded with Usnic Acid for Topical Application
Usnic acid, a secondary metabolite derived from Usnea sp., exhibits diverse pharmacological activities; however, its therapeutic utility is constrained by poor aqueous solubility and risk of hepatotoxicity upon oral administration. To overcome these limitations, this study aimed to develop a self-nanoemulsifying drug d...